8

我尝试嵌入来自 youtube vimeo、dailymotion 的不同视频。

可悲的是，除了我的 containerView 的背景颜色之外，什么都没有显示：

UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0, 320.0f, 200.0f)];

//item.url is my url which i get fro my webserver, it looks like http://www.youtube.com/watch?v=zPP6lXaL7KA&feature=youtube_gdata_player

            AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:item.url]];

            AVPlayer *avPlayer = [AVPlayer playerWithPlayerItem:playerItem];

            NSLog(@"%@",playerItem);

            AVPlayerLayer *avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];

            avPlayerLayer.frame = self.frame;
            [containerView.layer addSublayer:avPlayerLayer];
            [self addSubview:containerView];
            [avPlayer play];

            if (avPlayer.status == AVPlayerStatusReadyToPlay) {
                //[playingLbl setText:@"Playing Audio"];
                NSLog(@"It works");

            } else if (avPlayer.status == AVPlayerStatusFailed) {
                // something went wrong. player.error should contain some information
                NSLog(@"Not works");
                NSLog(@"%@",avPlayer.error);             
            }
            else if (avPlayer.status == AVPlayerItemStatusUnknown) {
                NSLog(@"AVPlayer Unknown");
            }

            containerView.backgroundColor = [UIColor blueColor];
            NSLog(@"error: %@", avPlayer.error);
            NSLog(@"AVPlayer: %@", avPlayer);

AVPlayer 错误为 Null，我总是从状态中获得的唯一日志是：AVPlayerItemStatusUnknown。有任何想法吗？

编辑1：

我将我的代码更改为：

@implementation VideoView

BlockVideo *list;

- (id)initWithBlock:(GFBlock *)block {
    self = [super initWithBlock:block];

if (self) {

    if (block.values && block.values.count) {
        list = (GFBlockVideo *) [block.values objectAtIndex:0];

        for (int i=0; i<list.videos.count; ++i) {

            GFBlockVideoItem *item = list.videos[i];
            UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0, 320.0f, 200.0f)];


//Like i said item.url = http://www.youtube.com/watch?v=zPP6lXaL7KA&feature=youtube_gdata_player
//@property (nonatomic, strong) NSString* url;

             AVAsset *asset = [AVAsset assetWithURL:[NSURL URLWithString:item.url]];
             AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithAsset:asset];
             AVPlayer *avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
             AVPlayerLayer *avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];

             avPlayerLayer.frame = containerView.frame;
            [containerView.layer addSublayer:avPlayerLayer];
            [self addSubview:containerView];
            [avPlayer play];

             containerView.backgroundColor = [UIColor blueColor];

可悲的是，我唯一能看到的是蓝色的 containerView ：/

在此处输入图像描述

我认为问题不在于 AVPlayer 本身，而可能是帧和图层......

4

3 回答 3

10

您必须执行以下操作：

AVAsset *asset = [AVAsset assetWithURL:[NSURL fileURLWithPath:item.url]];
AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithAsset:asset];
AVPlayer *avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
AVPlayerLayer *avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];

avPlayerLayer.frame = self.frame;
[containerView.layer addSublayer:avPlayerLayer];
[self addSubview:containerView];
[avPlayer play];

希望这可以帮助。

附录：

它还取决于您的网址；如果如你所说，你有一个这样的格式：

http://www.youtube.com/watch?v=zPP6lXaL7KA&feature=youtube_gdata_player

然后你应该改用这个：

[NSURL urlWithString:item.url];

鉴于那item是您的对象，并且url是对象类型的属性NSString。

于 2014-03-03T18:47:42.653 回答
1

对我有用的 AVPlayer 实现：

MP4：

player = [AVPlayer playerWithURL:videoPathUrl];
AVcontroller = [[AVPlayerViewController alloc] init];
[AVcontroller.view setFrame:CGRectMake(0, 0,self.view.frame.size.width, self.view.frame.size.width)];
AVcontroller.player = player;
AVcontroller.showsPlaybackControls = FALSE;
[self addChildViewController:AVcontroller];
[self.view addSubview:AVcontroller.view];
[player play];

MP3： 

 playerItem = [AVPlayerItem playerItemWithURL:url];
    player = [AVPlayer playerWithPlayerItem:playerItem];
    player = [AVPlayer playerWithURL:url];
    [player play];

要获取缩略图形式的视频，请尝试此

AVAsset *asset = [AVAsset assetWithURL:videoPathUrl];
 AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc]initWithAsset:asset];
float tempTime = CMTimeGetSeconds(player.currentItem.duration);
CMTime time = CMTimeMake(tempTime, 1);  // (1,1)
CGImageRef imageRef = [imageGenerator copyCGImageAtTime:time actualTime:NULL error:NULL];
UIImage *aThumbnail = [UIImage imageWithCGImage:imageRef];

对于停止视频 

[player pause];
player = nil;

**设置视频的播放速率/速度**

[player play];
[player setRate:currentRate];

从头开始播放

[player seekToTime:kCMTimeZero];
 [player play];

用于检查视频是否正在播放

 if ((player.rate != 0) && (player.error == nil)) {
// playing

}

用于寻找视频（提前一段时间）

float tempSeekTime = CMTimeGetSeconds(player.currentItem.duration) + 10;
CMTime targetTime = CMTimeMakeWithSeconds(tempSeekTime, NSEC_PER_SEC);
[player seekToTime:targetTime];
于 2019-10-17T10:14:29.763 回答
0

使用PHImageManager的requestPlayerItemForVideo方法获取一个AVPlayerItem；这是玩 AVAsset 的最简单、可靠的方式，表现完美且始终如一。

我在这里使用它：

https://youtu.be/7QlaO7WxjGg

于 2016-08-04T13:41:19.313 回答